Abstract: [Task] To provide a catalyst in which granules of the catalyst are improved in crash strength with no use of the caking agent, while increasing the effective area of the crystal surface part of the catalyst. [Solving Means] A catalyst powder-containing slurry obtained by milling a metallosilicate-containing raw material by a bead mill is dried by a spray drying method to obtain granules of a catalyst. The raw material may be one containing a metallosilicate having micropores of a size that is substantially 4.5 to 6.5 angstroms. It is better to mill the raw material by a bead mill such that the particle size of the metallosilicate becomes 1.0 ?m or less at a cumulative frequency of 50%. It is better that as a metal component at least one metal component selected from rhenium, vanadium, molybdenum, tungsten, chromium, and their compounds is supported on the metallosilicate. It is better to subject the slurry to the drying process after aging. It is better to add polyvinyl alcohol to the slurry.

Abstract: A catalyst for aromatizing a lower hydrocarbon, in order to increase the amount of production of useful aromatic compounds, such as benzene and toluene, by improving the methane conversion rate, the benzene formation rate, the naphthalene formation rate and the BTX formation rate (or a total formation rate of benzene, toluene and xylene) is such that molybdenum and silver are loaded on a metallosilicate as a substrate. It is more preferable to obtain the aromatizing catalyst by loading molybdenum and silver after modifying a zeolite formed of the metallosilicate with a silane compound that has a molecular diameter larger than a pore diameter of the zeolite and that has an amino group, which selectively reacts at a Bronsted acid point of the zeolite, and a straight-chain hydrocarbon group.

Abstract: A catalyst for producing aromatic compounds from lower hydrocarbons while improving activity life stability of methane conversion rate; benzene formation rate; naphthalene formation rate; and total formation rate of benzene, toluene and xylene is formed by loading molybdenum and copper on metallo-silicate serving as a substrate and then calcining the metallo-silicate. When the catalyst is reacted with a reaction gas containing lower hydrocarbons and carbonic acid gas, aromatic compounds are produced. In order to obtain the catalyst, it is preferable that molybdenum and copper are loaded on zeolite formed of metallo-silicate after the zeolite is treated with a silane compound larger than a pore of the zeolite in diameter and having an amino group and a straight-chain hydrocarbon group, the amino group being able to selectively react with the zeolite at a Bronsted acid point of the zeolite. It is preferable that a loaded amount of molybdenum is within a range of from 2 to 12 wt.

Abstract: [Task] In a method for producing an aromatic compound by a catalytic reaction using a lower hydrocarbon as a raw material, yields of hydrogen and the aromatic compound are to be improved, and a stable catalytic activity is to be maintained. [Solving Means] Molybdenum or a molybdenum compound is supported on metallosilicate, and then a carbonization treatment is conducted, thereby obtaining a lower-hydrocarbon aromatizing catalyst. A reaction gas containing a lower hydrocarbon is brought into contact with this catalyst, thereby producing an aromatic compound. Upon this, while allowing a non-oxidizing gas (except hydrocarbon gas) to flow, a temperature rising is conducted to a catalytic reaction temperature. When it reaches the catalytic reaction temperature, the reaction gas is allowed to flow, and the reaction gas is brought into contact with the catalyst, thereby obtaining an aromatic compound such as benzene or naphthalene.

Abstract: [Task] To provide a catalyst in which granules of the catalyst are improved in crash strength with no use of the caking agent, while increasing the effective area of the crystal surface part of the catalyst. [Solving Means] A catalyst powder-containing slurry obtained by milling a metallosilicate-containing raw material by a bead mill is dried by a spray drying method to obtain granules of a catalyst. The raw material may be one containing a metallosilicate having micropores of a size that is substantially 4.5 to 6.5 angstroms. It is better to mill the raw material by a bead mill such that the particle size of the metallosilicate becomes 1.0 ?m or less at a cumulative frequency of 50%. It is better that as a metal component at least one metal component selected from rhenium, vanadium, molybdenum, tungsten, chromium, and their compounds is supported on the metallosilicate. It is better to subject the slurry to the drying process after aging. It is better to add polyvinyl alcohol to the slurry.

Abstract: A catalyst for aromatizing a lower hydrocarbon, in order to increase the amount of production of useful aromatic compounds, such as benzene and toluene, by improving the methane conversion rate, the benzene formation rate, the naphthalene formation rate and the BTX formation rate (or a total formation rate of benzene, toluene and xylene) is such that molybdenum and silver are loaded on a metallosilicate as a substrate. It is more preferable to obtain the aromatizing catalyst by loading molybdenum and silver after modifying a zeolite formed of the metallosilicate with a silane compound that has a molecular diameter larger than a pore diameter of the zeolite and that has an amino group, which selectively reacts at a Bronsted acid point of the zeolite, and a straight-chain hydrocarbon group.

Abstract: A catalyst for producing aromatic compounds from lower hydrocarbons while improving activity life stability of methane conversion rate; benzene formation rate; naphthalene formation rate; and total formation rate of benzene, toluene and xylene is formed by loading molybdenum and copper on metallo-silicate serving as a substrate and then calcining the metallo-silicate. When the catalyst is reacted with a reaction gas containing lower hydrocarbons and carbonic acid gas, aromatic compounds are produced. In order to obtain the catalyst, it is preferable that molybdenum and copper are loaded on zeolite formed of metallo-silicate after the zeolite is treated with a silane compound larger than a pore of the zeolite in diameter and having an amino group and a straight-chain hydrocarbon group, the amino group being able to selectively react with the zeolite at a Bronsted acid point of the zeolite. It is preferable that a loaded amount of molybdenum is within a range of from 2 to 12 wt.